A parallel plate capacitor is charged from a cell and then isolated from it. The separation between the plates is now increased, then

In figure, half of the space between the plates of a parallel plate capacitor is filled with dielectric material of constant $K$. Then which of the plots are possible?

Four identical metallic plates $(1, 2, 3$ and $4)$ are arranged in air at same distance $d$ from each other with their outer plates being connected together and earthed. If the plates $2$ and $3$ are connected with a cell of constant emf $E$, then ratio of electric fields between the plates and variation of electric potential will be

Figure shows a capacitor having three layers between its plates. Layer $x$ is vacuum, $y$ is conductor, and $z$ is a dielectric. Which of the following change(s) will result in increase in capacitance?

Rows of capacitors containing $1,2,4,8,...,\mathrm{\infty }$ capacitors, each capacitance $2 \mu \mathrm{F}$, are connected in parallel as shown in the figure. The potential difference across $AB$ is $10 \mathrm{V}$, then

The figure shows an arrangement of four identical rectangular plates $A$, $B,C$ and $D$ each of area $S$. Find the charges appearing on each face (from left to right) of the plates. Ignore the separation between the plates in comparison to the plate dimensions.

A parallel plate capacitor is charged as shown ($Q$ is given). A metal slab with the total charge $+Q$ is placed inside the capacitor as shown. The thickness of the slab is $d$. The distance between the top plate and the top of the slab is $2d$, and the distance between the bottom plate and the bottom of the slab is $d$. Each plate is grounded through a galvanometer as shown. Find the charge that passes through each galvanometer after both switches are closed simultaneously.